Youshi lens is a domestic lens brand. In the choice of lens material, the same material as the astronaut mask is used, which makes the lens very light, 30% lighter than the ordinary 1.5 lens and much thinner.
In terms of technology research and development, Univision has five R&D centers around the world, with more than 500 researchers, and has more than 9,500 patents (including patents being applied for) so far.
In terms of lens quality, the visual lens has a clear and transparent appearance, no bubbles, dots and bright scratches on the surface, and the film layer is even to light, without broken marks and peeling.
Generally speaking, excellent visual lenses belong to the middle and high-end grades.